Sunan Ibn Majah 2341
سنن ابن ماجه#2341Sahihحَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَنْبَأَنَا مَعْمَرٌ، عَنْ جَابِرٍ الْجُعْفِيِّ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ ضَرَرَ وَلاَ ضِرَارَ " .
It was narrated from Ibn 'Abbas that the Messenger of Allah (ﷺ) said:“There should be neither harming nor reciprocating harm.”
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih Lighairihi
Shuaib Al ArnautSahih Lighairihi
Zubair Ali ZaiDaif
In-book reference: 13:34